1. A body will maintain a constant negative electrostatic charge if the body 1) Maintains the same excess of electrons. 3) Continuously receives more electrons than it loses. I chose 3) but I think both choices work. However, the correct answer is 1), I don’t why 3) is wrong. 2. Negatively charged rod A is used to charge rod B by induction. Object C is then charged by direct contact with rod B. The charge on object C 1) is positive 3) is negative. I chose 3) because when negative charged rod A moves close to one end of rod B, the electrons in rod B would gather at the other end, so left the opposite end all positive. After that, when C comes to contact with rod B, it depends on which end it touches. I am little confused. If it touches the negative end, then C becomes negative; vice versa. But the answer was 1). thanks for help.